Apologies for not being more clear. In my mind "simultaneous burning" meant "simultaneous buning of different discs." I'm an English major and a bit of a writer as well so I'm totallly embarassed. Oh well, it was late. . . at least we're all on the same page now.
I tried burning two different discs at 8x and it took 15:51, a slight improvement over what I had been seeing previously when burning at 16x. Regardless of the time, they view welll on my dvd player so I'm happy. I'll post scans from those two discs later so we have some data to chew on. I also plan on doing a simultaneous burn test of the same disc (copies) just for the record.
I still think it's odd how much longer burning two diffenent discs takes on my system when compared with burning one, but if that's normal for my configuration, there's not much else to say. Rearranging the IDE cables, however interesting it may sound, is probably overkill.
Great points all the way -- thanks. Interestingly enough, I do have a Pentium 4, 3.0ghz w/HT.
Quality trumps speed every time, you're absolutely right. And, 8x is quite reasonble, especially if the quality is high.